Question 1

What is the late start time for Activity E given the activity times and precedence requirements shown in the table?

Accepted Answer

A) 12 
B) 13 
C) 14 
D) 15

Question 2

Activities C,D,and E in the project represented by the network are to be hammocked.What is the activity length of the hammock activity?

Accepted Answer

A) 20 
B) 16 
C) 13 
D) 11

Question 3

Pessimistic and optimistic values are estimated at the ________% confidence level.

Accepted Answer

The answer of Pessimistic and optimistic values are estimated at...

Question 4

________ is the identification of the project objectives and the ordered activity necessary to complete the project.

Accepted Answer

The answer of ________ is the identification of the project...

Question 5

A(n)________ is a point when an activity is either started or completed.

Accepted Answer

The answer of A(n)________ is a point when an activity...

Question 6

What is the underlying theory to the three time estimates approach? What data distribution should be applied in this case and what confidence should a project manager place in the calculations associated with this technique?

Accepted Answer

The answer of What is the underlying theory to the...

Question 7

An activity has an optimistic time estimate of 7 days,a most likely estimate of 12 days,and a pessimistic estimate of 20 days.What is the expected standard deviation of the activity?

Accepted Answer

A) between 2 and 3 days 
B) between 3 and 4 days 
C) between 4 and 5 days 
D) between 5 and 6 days

Question 8

The overall effect of laddering activities is to:

Accepted Answer

A) streamline the linkage and sequencing between activities and keep project resources fully employed. 
B) summarize some subsets of the activities identified in the overall project network. 
C) allow the project team to disaggregate the overall project network into logical summaries. 
D) allow the project manager to more fully deploy resources and complete the project with zero slack.

Question 9

Summaries for some subsets of the activities identified in the overall project network are called:

Accepted Answer

A) ladder activities. 
B) hammock activities. 
C) negative float activities. 
D) compressed activities.

Question 10

An activity has an optimistic time estimate of 15 days,a most likely estimate of 24 days,and a pessimistic estimate of 40 days.What is the variance of the activity?

Accepted Answer

A) 4.17 
B) 25.17 
C) 17.36 
D) 10.33

Question 11

Serial activities are those that:

Accepted Answer

A) flow from one to the next in sequence. 
B) have sequential numbers. 
C) have the same numbers. 
D) should be performed simultaneously.

Question 12

Discuss any five approaches to reducing the critical path.Which is the most effective and which is the most difficult to achieve? Why?

Accepted Answer

The answer of Discuss any five approaches to reducing the...

Question 13

Use the information in the table to determine the early finish time for Activity D.

Accepted Answer

A) day 23 
B) day 26 
C) day 29 
D) day 32

Question 14

What is the float start time for Activity C given the activity times and precedence requirements shown in the table?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4

Question 15

Consider a project composed of activities X and Y having equal length and performed in that order.Both activities can be laddered such that the first half of each activity is the predecessor for its own second half,so X1 precedes X2 and Y1 precedes Y2.The first half of X1 is also the predecessor for Y1.If the laddering procedure were performed again activities X and Y would be divided in four parts each,with precedence working as it did in the first split.Derive an expression for the minimum length of the project as laddering increases.

Accepted Answer

The answer of Consider a project composed of activities X...

Question 16

Which of these statements about this network is best?

Accepted Answer

A) Activities A and B are serial activities. 
B) Activities B and C are serial activities. 
C) Activities A and C are serial activities. 
D) Activity D is a merge activity.

Question 17

These can be located by doing a backward pass through a network.

Accepted Answer

A) critical paths 
B) merge activities 
C) successors 
D) burst activities

Question 18

What are three methods of duration estimation for project activities and what are the advantages and disadvantages of each method?

Accepted Answer

The answer of What are three methods of duration estimation...

Question 19

Hammock activities allow:

Accepted Answer

A) project managers to streamline the linkage and sequencing between activities. 
B) project workers to effectively skip nonessential activities without compromising project quality. 
C) the project team to better disaggregate the overall project network into subsets. 
D) the project manager to identify float more quickly and leverage it more successfully for the overall success of the project.

Question 20

Use the values in the table to calculate activity durations and variances for the project.What is the likelihood that the project takes between 50 and 55 days to complete?

Accepted Answer

The answer of Use the values in the table to...

Exam 9: Project Scheduling: Networks, duration Estimation, and Critical Path